Variable force solenoid operated valve assembly with dampener

Details Variable force solenoid operated valve assembly with dampener Variable force solenoid operated valve assembly with dampener

F - Mech Eng,Light,Heat,Weapons

16

K

F16K 31/06 (2006.01) F16K 47/04 (2006.01) G05D 16/20 (2006.01)

Patent

CA 2233449

A variable force solenoid operated pressure control valve of the type having a force balanced spool moveably controlled energization of the solenoid for modulating the discharge pressure of the valve at its control outlet when the valve is supplied at its inlet with fluid of a supply pressure. The spool is moved to bleed fluid through an exhaust port to a sump for controlling the pressure supplied to the control outlet. The spool has a dashpot and piston in one end for providing hydraulic dampening of spool oscillations. In one embodiment a cylindrical piston is used and in an alternate arrangement a ball is employed in the dashpot.

Soupape régulatrice de pression à force variable et commande par solénoïde du type à activation commandée par le mouvement d'un obturateur à équilibre de forces pour moduler la pression de décharge de la soupape à sa sortie régulée quand la soupape reçoit à son entrée un fluide à une pression d'alimentation. L'obturateur est ouvert pour décharger le fluide par un orifice d'exhaure à un puisard pour réguler la pression à la sortie régulée. L'obturateur a un amortisseur à fluide et un piston à un bout pour assurer l'amortissement hydraulique des oscillations de l'obturateur. Dans une application, on utilise un piston cylindrique et, dans un agencement différent, on emploie un élément sphérique dans l'amortisseur à fluide.

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